* Roll Dart to version 0175f24b2549732d0010708988fd328440c3f956
Notable runtime changes :
- Translate asserts in the VM-specific async translation
- Fixes flutter code coverage issues
- Fix type test '_Closure class IS FunctionType' in strong mode
- Report a compile-time error on magic const
- Do not skip type checks on closure functions.
- Make Dart_DumpStackTrace work when there is no current isolate.
- [vm/kernel/aot, test tool] Enable global type flow analysis
* updated DEPS
* Update.
* Update new license.
d7a90e2f83